Semiconductor Tool Weight Placement for Low-Frequency Vibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Low frequency vibrations in semiconductor manufacturing facilities affect production tools, leading to reduced production yield rates due to defects such as pits, bumps, and line defects caused by equipment shaking during processes like thin film deposition.
Innovation Solution
Attaching weights or masses to semiconductor manufacturing apparatuses, such as furnace equipment, to increase their mass and susceptibility to vibrations, using materials like metal blocks or plates, and optionally damping materials like rubber pads to secure them, thereby reducing equipment vibrations and defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If weights are attached to semiconductor manufacturing apparatus, then vibration resistance is improved, but device complexity increases
Solution Approach 1:
The vibration reduction system is segmented into modular components: multiple discrete weights that can be independently attached to different locations on the apparatus, and separate damping materials that can be applied independently. This allows selective placement of vibration reduction elements only where needed, rather than requiring a complete redesign of the entire apparatus structure.
Solution Approach 2:
Damping materials serve as intermediary elements between the weights and the apparatus structure, and between the apparatus and the vibrations. These damping layers absorb and dissipate vibrational energy, mediating the interaction between the added weights and the apparatus, thereby reducing the overall vibration while maintaining operational flexibility.
2Manufacturing precision
If weights are attached to semiconductor manufacturing apparatus, then manufacturing precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The vibration reduction system is designed to be dynamic and adjustable rather than fixed. Weights can be added, removed, or repositioned based on specific manufacturing needs and vibration characteristics. This dynamic approach allows the system to be adapted to different apparatus configurations and vibration problems without requiring permanent structural modifications.
Solution Approach 2:
The system allows for parameter changes in weight mass, weight location, and damping material properties to optimize vibration reduction for different manufacturing scenarios. By adjusting these parameters rather than redesigning the entire apparatus, manufacturing precision can be improved while maintaining ease of manufacture through simple parameter adjustments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The added weights significantly reduce vibrations, enhancing equipment stability and minimizing defects in semiconductor devices by making the equipment less susceptible to unwanted vibrations, thus improving production yield rates.
Implementation Method 1
Attaching weights or masses to semiconductor manufacturing apparatuses, such as furnace equipment, to increase their mass and susceptibility to vibrations
Implementation Method 2
using materials like metal blocks or plates, and optionally damping materials like rubber pads to secure them
Data Source
AI summary
A method that includes measuring vibration levels in a semiconductor manufacturing apparatus, determining one or more sections of the semiconductor manufacturing apparatus that vibrate at levels greater than a predetermined vibration level, and reducing the vibration levels in the one or more sections to be at or within the predetermined vibration level by coupling one or more weights to an external surface of the semiconductor manufacturing apparatus in the one or more sections.